package com.lmk.controller;

import com.lmk.domain.User;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@RequestMapping("/order")
public class OrderController {
    @Autowired
    private RestTemplate restTemplate;

    @GetMapping("/getUserById/{id}")
    // 标记方法熔断，fallbackMethod指定的是托底方法名称，当服务调用出现问题，就会触发托底方法
    @HystrixCommand(fallbackMethod = "getUserByIdFallback")
    public User getUserById(@PathVariable("id") Long id){
        //String url = "http://localhost:10020/user/getUserById/" + id;
        String url = "http://user-service/user/getUserById/" + id;
        User user = restTemplate.getForObject(url,User.class);
        return user;
    }
    // 响应托底数据的方法，方法的入参必须接口一致
    public User getUserByIdFallback(Long id){
        return new User(-1L,"触发熔断","当前服务不可用！！！");
    }
}
